Yellow and pink chrysanthemums are to be avoided, especially since the colour yellow denotes friendship and is "nothing to do with love or romance", she warned.

Florists across Gwent will be working flat out towards the end of next week to get deliveries out on time.

“I have ordered 1,000 red roses from Holland, but even that may not be enough," said Mrs Langley, who will be up well before dawn on February 14, making sure all the orders are placed in delivery vans ready to go out.

"Flowers need to be beautiful and fresh,” said Mrs Langley. "I like to use the very best roses, with a long stem and a wonderful fragrance.

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"I think young people are getting more romantic. Life can be difficult for teenagers these days, and I think something simple like a single red rose can mean such a lot.”

For £5, you can buy a single rose in a tube with some white flowers and berries, but prices do rise around Valentine's Day.

A dozen red roses will set you back one penny off £50, or if you want something a little different, you can have the roses arranged in a shape for around the same cost.

“If I had my choice, for me, there really is nothing like two dozen red roses on Valentines Day,” said Mrs Langley. “If somebody buys you two dozen red roses then you know they are serious."

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One customer bought 100 red roses for his loved one which cost £250 - now that is serious.

You do not have to spend a fortune on Valentine's Day gifts, and if you're not sure, then red roses are your safest bet.

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